Ok, so I was talking to someone and they said that they watched three things in tandem. I questioned them and asked: "You watched them all at the same time?" They replied: "No I watched them one after the other. In tandem." "You mean, consecutively?" - Me. "No no, tandem means one after the other. I'm a professional translator, trust me." - Them "Tandem means at the same time, not one after the other, that would be consecutively." -Me "Hold on..." - Them, to which they copy and pasted this. http://i.imgur.com/rz7NRxA.png a (1) : a 2-seated carriage drawn by horses harnessed one before the other (2) : a team so harnessed (b) : tandem bicycle (c) : a vehicle (as a motortruck) having close-coupled pairs of axles 2: a group of two or more arranged one behind the other or used or acting in conjunction. "See? I'm right." -Them. "What? No you're not." -Me. "That's not what Merriam Webster says. Look, 'a group of two or more arranged one behind the other or used or acting in conjunction'" -Them. "a group of two or more arranged one behind the other IN PHYSICAL PLACEMENT OR POSITION" - Me "used or acting in conjunction USED OR ACTING AT THE SAME TIME" - Me. "The second one applies to what you were doing, now acknowledge your defeat good sir!" - Me "Sigh. I can't be bothered to argue with stupid. I'm going to bed. Goodnight." - Them At this point I feel a little uncertain because of their insistence, but I know this is what tandem means. At the same time. So am I right?